Linux

Installation EnvironmentLinux (CentOS7.0 version), boost_1_59_0.tar.gz, mysql-5.7.12.tar.gzMySQL 5.7 Key Features : Better performance: For multi-core CPUs, solid-state drives, locks have better optimization, 100W QPS per second is no

/root file, all files are under the root/boot system boot related files, such as kernel initrd grub (bootloader)/dev Device files (special files, no size, black background, yellow font)Block devices-random access, data blocksCharacter

Linux: All FilesFast switch Virtual terminal CTRL+ALT+F1-F6, can switch the first, the second, to the sixth unit.Su root user, switch between ordinary users.Date can query the time, and the-s option can set the time. S is the first letter of set.Who

Linux BasicsSwitch multi-user virtual terminal CTRL+ALT+FNPTS Right-click on the default user that opens: 0 GUI GUI default login userTtyn: User with command-line mode login$ normal User# adminCommand: man.linuxde.net (Chinese command search)IdW.H.O.

Compile the. A library file used by LinuxThe first is the source file that needs to be compiled into. Ahello.h :#ifndef __include_hello_h__#define __include_hello_h__void HELLO (const char *name); #endif//End __include_hello_h__hello.c#include

First, the new user natasha,uid for the 1000,gid is 555, the note information is "master":Groupadd-g 555 NatashaUseradd-u 1000-g 555-c Master NatashaModify the Natasha user's home directory to/natasha:To view the last line of the user Information

Linux System Introduction:Linux is a free-to-use and free-to-propagate Unix-like operating system, a POSIX and Unix-based multiuser, multitasking, multi-threaded and multi-CPU operating system. Widely used in the operating system on the server, the

Linux Basics-2Switch multi-user virtual terminal CTRL+ALT+FNPTS Right-click on the default user that opens: 0 GUI GUI default login userTtyn: User with command-line mode login$ normal User# adminCommand: man.linuxde.net (Chinese command search)IdW.H.

1. Confirm that Yum source is not a problem, if there is a problem, refer here to replace2.Yum install-y boost-devel gperf libevent-devel libuuid--y GearmandThe installation is complete.Enter Gearman confirm the installation is successful,

In the lamp architecture, because the set session timeout time is one day, so encountered PHP generated by a large number of sessions in the/data/tmp directory, the number is about 2 million, and can not be collected in a timely manner. Using

MV: Moving commands and modifying file and directory names       moving files and directories example: Move the lists file in the current directory to its subdirectory babydog command: MV lists Babydog       Renaming files and directories: Change

MV Original filename #相当于重命名查看文件内容相关命令cat the new file name #查看文件全部内容head-n #查看文件前n行内容 (default top 10 lines) tail-n #查看文件后n行内容 (default after 10 lines) tail-F #动态查看文件新增内容more #百分比查看文件内容less #递进查看文件内容> #左边的内容 Overwrite right content (redirected)

Blocking IO Model The user space calls the Recvfrom command until the packet arrives and is copied to the buffer of the application process or when an error occurs, and the process or thread waits for a blocking state.2. Non-blocking IO

UNIX is a computer operating system, a control program used to coordinate, manage, and control computer hardware and software resources.1.UNIX operating System features: Multi-user and multi-tasking;A) Multi-user indicates that at the same time

RZ upload file sz download file date display Day Cal display Calendar Shutdown-h now immediately shut down the time is equivalent to 0 init 0 shutdown shutdown-h +10 10 minutes after shutdown Shutdown-r now restart chmod Change permissions

Classification of Linux usersDepending on the location of the account: local account, remote account. Ldap,nisBased on the function of the account: Superuser (Root) uid:0Normal User:System User UID: (RHEL7) 1-999 (rhel6 1-499)Local user UID: (RHEL7)

As we all know, because of the stability of Linux, usually as a server system, to be called a master of PHP, Linux is a compulsory lesson. So what happens in the middle of the Linux system from boot to boot? This article will briefly discuss the

How To Configure VMware fencing using fence_vmware_soap in RHEL High Availability Add On (STONITH configured in RHEL Pacemaker), pacemakerstonith This article describes how to configure a fence_vmware_soap STONITH device in RHEL 7 Pacemaker (for

Exceptions caused by a space in shell programming and caused by space in shell programming Recently, shell was used to write a script replace. sh to back up and replace f server programs. The original intention was to save manpower and repeat

Linux device driver development details: Based on the latest Linux 4.0 kernel, driver development 4.0 This book introduces the theory, framework, and example of Linux device driver development, detailed descriptions of spin locks, semaphores,